LOCATION.--Lat 41°02'39", long 74°17'35"
referenced to North American Datum of 1983, Wanaque Borough, Passaic
County, NJ, Hydrologic Unit 02030103, on left bank 750 ft downstream
from Raymond Dam in Wanaque, and 50 ft upstream from bridge on County
Route 511 (Ringwood Avenue).DRAINAGE AREA.--90.4 mi2.PERIOD OF RECORD.--Continuous-record stage only, December 1903
to December 1905. Continuous-record gaging station, September 1912 to
April 1915, May 1919 to current year.GAGE.--Water-stage recorder with telemetry and concrete control.
Datum of gage is 210.00 ft above NGVD of 1929 (levels from New Jersey
Geological Survey benchmark). December 16, 1903 to December 31, 1905,
non-recording gage on highway bridge at site 50 ft downstream at
different datum. September 15, 1912 to April 1, 1922, non-recording
gage at site 200 ft downstream from present concrete control at
different datum. April 1, 1922 to March 14, 1931, water-stage recorder
at site 400 ft downstream from present concrete control at present
datum.REMARKS.--Records good, except for estimated discharges which
are fair. Flow regulated by Greenwood Lake (see 01383000) 11 mi above
station, since October 1987 by Monksville Reservoir just upstream from
Wanaque Reservoir, and since 1928 by Wanaque Reservoir (see 01386990).
North Jersey District Water Supply Commission diverts water for
municipal supply from Wanaque Reservoir. Water is diverted to Wanaque
Reservoir from Posts Brook near Wanaque, from Ramapo River at Pompton
Lakes, and from Pompton River at Two Bridges. Water diverted into basin
above gage from Upper Greenwood Lake (Hudson River basin) by North
Jersey District Water Supply Commission since 1968.EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 10,500
ft3/s, Apr 5, 1984, gage height, 10.82 ft; minimum
discharge, not determined.